New DE unit.. The Dark Orc!!

Hi buddies, dark orc is a simple and slow orc wearing armor to defend themselves, their attack is the same type as the archers, land - air, with its overwhelming force he can remove large rocks from the ground, to launch them on their goals, their favorite targets are the towers of magicians and mortars, now let the statistics of the dark orc:
Objectives favorites: mortars and towers magicians. Damage type: splash
Objectives: ground / air
Housing space: 12
Movement Speed: 10
Running Time: 25 min
Damage: 90
Lifetime: 400
Cost: 250 dark elixir
Special Ability:
Shell Life shell: 450 The shell defends the dark orc ataqes of their enemies, consisting of a long lasting life, when the shell is left without points, It follows, thus being able to defeat the dark orc.

This new troop will be available starting in the town hall 9, the statistics are only approximate, supercell This is a great idea, please do not discard it immediately, look at the idea discuss it and above all try to improve it, please read this post and kind regards :)

I don't get it.